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首页> 外文期刊>Journal of Materials Science >Fabrication of mesoporous titania aerogel film via supercritical drying
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Fabrication of mesoporous titania aerogel film via supercritical drying

机译：超临界干燥法制备介孔二氧化钛气凝胶薄膜

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Using a supercritical drying method, fluorine-doped tin oxide (FTO) glass was coated with a mesoporous titania aerogel film prepared from titania sols with viscosity between 10 and 60 cP that had been spin coated, immersed in IPA solution, and aged at least 3 weeks. Mesoporous titania aerogel film has an anatase structure, and an average porosity of 76%. It is hydrophilic, and its mechanical strength is improved by heat treatment at over 400 degrees C for 2 h. After heat treatment, the film retains its anatase structure and has a porosity of 68%. Dye-sensitized solar cells were fabricated using these mesoporous titania aerogel films. The thickness of the film was about 1 mu m and the highest photo conversion efficiency, obtained when the film was heat treated at 450 degrees C for 2 h, was 3.71%.
机译：使用超临界干燥方法，在氟掺杂的氧化锡（FTO）玻璃上涂上由介孔二氧化钛气凝胶膜制成的膜，该膜由粘度为10至60 cP的二氧化钛溶胶旋涂而成，浸入IPA溶液中并老化至少3周。中孔二氧化钛气凝胶膜具有锐钛矿结构，平均孔隙率为76％。它具有亲水性，并且通过在400摄氏度以上的温度下热处理2小时提高了其机械强度。热处理后，薄膜保持其锐钛矿结构，孔隙率为68％。使用这些中孔二氧化钛气凝胶薄膜制造了染料敏化太阳能电池。膜的厚度为约1μm，并且当将膜在450℃下热处理2h时获得的最高的光转换效率为3.71％。

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